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Server-side template injection in beetl

Critical severity GitHub Reviewed Published May 4, 2023 to the GitHub Advisory Database • Updated Nov 8, 2023

Package

maven com.ibeetl:beetl (Maven)

Affected versions

<= 3.15.0.RELEASE

Patched versions

None

Description

An issue in the render function of beetl v3.15.0 allows attackers to execute server-side template injection (SSTI) via a crafted payload.

References

Published by the National Vulnerability Database May 4, 2023
Published to the GitHub Advisory Database May 4, 2023
Reviewed May 5, 2023
Last updated Nov 8, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(48th percentile)

Weaknesses

No CWEs

CVE ID

CVE-2023-30331

GHSA ID

GHSA-m69h-4frq-vwq7

Source code

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